-.32=.5(-9.81)t^2

Solution for -.32=.5(-9.81)t^2 equation:

Simplifying
-0.32 = 0.5(-9.81) * t2

Multiply 0.5 * -9.81
-0.32 = -4.905t2

Solving
-0.32 = -4.905t2

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '4.905t2' to each side of the equation.
-0.32 + 4.905t2 = -4.905t2 + 4.905t2

Combine like terms: -4.905t2 + 4.905t2 = 0.000
-0.32 + 4.905t2 = 0.000

Add '0.32' to each side of the equation.
-0.32 + 0.32 + 4.905t2 = 0.000 + 0.32

Combine like terms: -0.32 + 0.32 = 0.00
0.00 + 4.905t2 = 0.000 + 0.32
4.905t2 = 0.000 + 0.32

Combine like terms: 0.000 + 0.32 = 0.32
4.905t2 = 0.32

Divide each side by '4.905'.
t2 = 0.06523955148

Simplifying
t2 = 0.06523955148

Take the square root of each side:
t = {-0.255420343, 0.255420343}